The Investigation of Stress Distribution in Pulsed Magnets

Abstract

The analysis of stress distribution in pulsed coils applicable for pulsed magnetic field generation has been done. Process modelling was carried out using Matlab Simulink software and Matlab programming tools that in combination allow to create easy to modify, flexible and universal model for the magnetic field and stress calculation in pulsed coils. The target of the simulation was to calculate the amplitude of mechanical stresses in inductor cross-section. The stresses that exceed the yield strength of materials used for inductor construction, deform the inductor plastically and change its electrical parameters or, if tensile strengths are exceeded, may lead to a total destruction. 4 layer and 10 windings per layer pulsed inductor with interlayer reinforcement and outer steel shell was analyzed here and it was proved that, while generating a 49T magnetic field pulse, the stresses in inductors cross-section were not larger than ones allowed which tells us that inductor could be multi-time used. The created model might be used to analyze any inductor during the design phase no matter what the geometrical configuration or material composition is. Such methodology enables us to solve inductor geometry and material application problems and design inductors that can be used to generate many magnetic field pulses that are above 50T. Ill. 8, bibl. 7 (in English; summaries in English, Russian and Lithuanian).